Portable sawing-machine.



J. OHARA.

PORTABLE SAWING MACHINE.

APPLICATION FILED MAB. zo, 190s.

2 SHEETS-SHEET 1.

Patented J an. 19, 1909.

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4ii! wl i J. OHARA.

PORTABLE SAWING. MACHINE.

APPLICATION FILED 1li/AR. 2o, 190e.

Patented Jan. 19, 1909.

2 SHEETS-SHEET 2.

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view of JOSEPH OHARA, OF ST. LOUIS, MISSOURI.

PORTABLE same-mim.

l "No.9'10,1145.f

fbi-"all whom Be it ilmownrthat I,JosErH OHARA, a citizen ofthe United States of America,

` residing at the city of St. Louis, inthe State` 5- of Missouri, .have invented certainnew and useful Improvementsin Portable Sawing- 'Mach-ines, of which the following is a full, clear, and exact description, reference being had to theaccompanying drawings, forming 10` part of this specification. 4 f @M5/.invention relates -to* improvements in portable sawin :machines .and has for its ject to. provi e an efficient machine of the 1.5 -easily transported from.place to place and is jartlcularly applicable for .use in sawing own=trees and by adjustment of the saw, cutting the timber into any required lengths. :Figure I is a fragmentary top or plan my satving machine. Fig. II is a View partly in side elevationand partly in section. III is a side elevation of a modification. Fig.' IV is a' detail view taken on line IV'IV, Fig. III. Fig. V is a cross `sect-ion taken on line V-'-V, Fig. III.

In the accompanying drawings: 1 designates the axle of my sawing machine mounted in a pair of ground wheels 2. 3 is a beam that is supported by the axle l 'and is adapted to be adjustably held thereon and to be swung laterally by the following means.

Lf-is a slidable bearing plate resting upon the axle and provided with legs 5 which em-y brace the axle and in one of which is a set screw 6 'by which the bearing plate may be held at any desired point along the axle. The bearing plate lis provided with a post or bolt 7 that extends vertically therefrom and passes through the beam 3 and through a rotatable wear plate 8 resting upon the bearing plate beneath the beam. The post or bolt 7 is equipped with al nut 7 that serves to hold the beam 3 in position above the plate 4.

.9 desi V pairs an hinged to cross bars 10 that are attached to the beam 3. One pair of these hanger arms is preferably located adjacent tot e axle l, while the other pair of hanger arms is located yat or near the forward end of said beam. The hanger arms serve as supports for members to be hereinafter more .articularly referred to and eachfpair of 5er arms has mounted therein anu per bolt- 11 and a lower binding bo t 12' u l "Specication of Lettem'Patent.- D application mea umn 20,4908. sandra 422,193.

0b haracter described, that can readily and.

ates .hanger arms arranged in lPstented 3:11.19, 1909.

f adapted to be removed from the ,hanger arms'or loosened to-p'ermit movement of'the .supportedzmembers 4that are held .between the arms. .1 3 I designates positionedbetween the forward hanger arms v i .'60, a tubular ,housing that s- 9 and is adapted to -beclamped between these arms, and 14 is a'bearingbox secured to the rear end of the tubular housing .13 adapted to beclamped betweenthe rearpair of hanger arms 9.

15 designates a driving shaft; that extends longitudinally through the housing 13 and the bearing box 14, and 16 isa motor supported by and suspended from .the beam 3, havingits shaft united by a flexible coupling 17 to the driving shaft 15,. Theforward end of the drivin shaft extends through the forward end ofg the housing 13 andhas xed to it a beveled gear wheel 18. This end of the shaft operates in a journal bushing 19 that is seated in the housing 13, as seen in Fig. II.

20 deslgnates a double-armed bracket that is provided with a collar 21 'attached by suitable means, such as set screws 22 to the forward end of the housing 13. The arms of this bracket straddle the beveled gear wheel 18 upon the driving shaft 'and4 are provided with journal boxes 23 in which is mounted a mandrel 24 to which a circular` saw 25 may be ailixed. The saw mandrelhas..

beam upon the axle from a lcentral position thereon and at a right angle to the axle, or, when the-machine is being transported from place to place.

In the use of my sawing machine,.thefbeam 3 may be elevatedto any .desired .degree,' by

tilting it with--the axle upon which itis. -mounted, this action being ossible due-to the axlebeing loosely mounte in thegrolm wheelsand thecircular-saw .be driven -by lthe operation of the motor 16` and the driving -mechanism .extending 'from saidY mav `motor to the mandrel of the saw, while the beam is held at right angle to the axle by the brace 27. `When, however, it is desired to swing the beam laterally, the beam is disconnected from the brace 27 by the removal of the nut 28 and the beam may then be swung laterally while supported by the axle due to the existence of the pivotal connection furnished by the bearing plate 4, and the post of said bearing plate which passes vertically through the beam. It is frequently desirable to change the location of the saw and its driving mechanism and supports without moving the running gear of the machine. This movement 1s readily accomplished in my machine by looseningathe set screw 6 that holds the bearing plate 4 to the axle of the machine when the beam 3 and all of the parts associated with it may be shifted laterally upon the axle, as indicated by full and dotted lines, Fig. I, after which the bearing plate is secured in its adjusted position to remain stationary until it is to be readjusted. It will be seen that the beam and the parts associated with it may be swung laterally at all times, when itv is free of restraint by the brace 27, irrespective of the location of the beam above the axle of the machine. When the circular saw is to be used in sawing a piece of timber lying in a horizontal position, the saw is positioned in a vertical plane, as seen in full lines Figs. `I and II, being restrained in such position, due to the housing 13 and the bearing box 14 being clamped between the hanger arms 9 suspended from the beam 3. The saw may be readily shifted to a horizontal position for cutting down trees by loosening the binding bolts l1 and 12, in the hanger arms 9, thereby allowing the housing 13 and bearing box 14 to be turned within said arms to the desired degree and when the binding bolts are again tightened, the hanger arms will clamp the housing and bearing box between them to hold the saw in a horizontal plane, or in any position desired between a horizontal plane and a vertical plane.

In the modification illustrated in Figs. III andv IV, the running gear, the beam 3, the housing 13, the hanger arms 9, the driving shaft 15 and the motor 16 are of like construction to theA similar parts previously described and no further mentisof these parts is deemed necessary in describing the modification. This modification contemplates the use of a cross cut saw instead of a circular saw and to this endit includes the following parts: 20 is a bracket fixedto the driving shaft housing 13 andhaving ournal boxes in which is mounted a transverse shaft -24l that has fixed to itA a worm wheel 26.

crank, xed to the shaft 24 and 29 isla pitman connected at one end to the crank 26a. The other end of this pitman is pivoted to a reciprocating rod 30 that is operable in a guide box 31 supported bythe Inotor 16. The reciprocating rod 30 receives thc attachment of a cross cut saw 32 that is secured to the rod by a coupling 33 adapted to be turned upon the rod to any desired position and hold the saw in any plane or angle that may be desirable. The coupling is prefer ably held to the reciprocating rod by a set screw 34.

I claim:

1. The combination of an' axle, a slidable and rotatable beam mounted upon the axle, hanger arms suspended from the beam, a tubular housing and bearing box clamped to the hanger arms, a driving shaft extending through the tubular housing, means for operating the driving shaft, a. .bracket secured to the forward end of the tubular housing, a driven shaft mounted in the bracket, gearing connecting the driving shaft 4with the driven shaft and a saw connected up with the driven shaft.

2. The combination of an axle, a slidable and rotatable beam mounted upon the axle,

hanger arms suspended from the beam, a

vrotatable tubular housing and bearing box clamped to the hanger arms, a driving-shaft extending through the tubular housing,

means for operating the driving shaft,vav

bracket secured to the forward end of the tubular housing, a driven'shaft mounted in the bracket, gearing connecting the driving shaftwith the driven shaft and a saw connected up with the driven shaft.

3. The combination of an axle, av slidable bearing plate resting upon the axle and having legs embracing. the axle, a beam mounted upon the bearing plate, hanger arms suspended from the beam, a tubular housing and bearing box clam ed to the hanger arms, a driving shaft exten ing through the tubular housing, means for operating the driving shaft, a bracket secured to the forward end of the tubular housingT a driven shaft mounted in the bracket, gearing connectin the driving shaft with the driven shaft an a saw connected up with the, driven shaft.

4. The combination of an axle, a slidable bearing plate resting upon the axle and having legs embracing the axle, and a rotatable wear plate, a beam mounted upon the wear clamped to the hanger arms, a driving shaft extending through the tubular housing,

means for operating the driving shaft, a

bracket secured to the forward end of the tubular housing, a driven shaft mounted in the bracket, gearing connecting the driving shaft with the driven shaft and a saw connected up with the driven shaft.

5. The combination of an axle, a slidablel and rotatable beam mounted upon the axle, hanger arms suspended from the beam, a tubular housing and bearing box clamped to the hanger'aiins, a driving shaft extending through the tubular housing, means for operating the driving shaft, suspended from the rear end of the beam, flexible coupling between the operating means and the driving shaft', .a bracket secured to the forward end of the tubular housing, a driven shaft 10- JOSEPH OHARA.-

In the presence of LILY Ros'r, BLANCHE HOGAN. 

